Automatic phonograph



Jan. 25, 1944. ,.R. s. CRANME'R mL- AUTOMATIC VPHONOGRAPH Fil-ed Aug.2l', 1941 4 SheetsSheei 1 Jan. 25, 1944.

R s. CRANMER ErAL AUTOMATIC PHONOGRAPH Filed Aug. l 21, `1941 4Sheets-Sheet 2 Jan. 25, 1944.

R. s. CRANMER ETAL 2,339,981"

4AUTOB/ITIC PHONOGRAPH y' Filed Aug. 21, 1941 `4 shets-sheet s Jan. 25,1944. R. s. CRANMER Erm.

AUTOMATIC PHONOGRAPH F i1ed Aug. 2l,A 1941 4 Sheets/-Shet 4 Z IZ IMI/PatenteclvJan. 25,

,AUroMarrc rnqonoonn A Pelphia. :und Charles Richard s. crannier, A.Pittman, Jr., Philco Radio and Seilel'sville, Pa., assigner-s toTelevision Corporation, Philadelphia, Pa., a corporation of Delaware l gApplication august 21, 194i, serial No. 407,788

13 Claims. v

flhis invention vrelates to automatic phonographs, and more particularlyto a tone arm lndexin'g mechanism therefor. Disc recordings now incommon use are obtainable in twelve and ten inch diameters, andautomatic phonographs must, thereforebe capable ofl playing records ofeither diameter. This in turn requires that the mechanism forpositioning the tone arm so that the stylus will engage the record atthe clear' outer marginal edge thereof be selectively adjustable forrecords of either diameter. Such a mechanism preferably is a simpleunitary structure having relatively few parts, yet it must be accurateand capable of simple adjustment by inexperienced operators. More'over;most automatic phonographs in'cludevsome form of an aiu-l tomaticrecord. changer capable of feeding to the phonograph turntablesuccessive records of the same diameter, and such device must beadjustable for records of dieren't diameters.

The principal object of the present invention is to provide a tone armindexing mechanism of improved character. l

A further object of the invention is to provide an accurate tone armindexing mechanism of great simplicity. y

Another object of the invention is to provide a novel automatic recordchanger capable of easy adjustment to accommodate records of variousdiameters.

A still further object of the inventionis to adjustment means and thetone arm indexing mechanism, whereby both will be simultaneouslyadjusted by the operation of one control.

, provide an interlock between the record change- Other objects andfeatures of the invention will appear from the following description ofonestructure embodying the invention. In the drawings:

Fig. 1 is a side elevation of an automatic phonograph constructed inaccordance with the present invention; y

Fig. 2 is a top plan view of the pronograph with the base plate andturntable shown in dot and dash outline and with the tone arm removedfor purposes of illustration:` y

y Fig. 3 isa bottom plan view of the phonograph; Fig. 4 is a partial ytion ofthe mechanism taken along line @-4 oi Fis. 2; Y p

Fig. 5 is a perspective view of certain elements,

showing particularly the interconnection beprovided with teeth it on itssectional view through a por- Y (ci. ars-10) illustrating thefunctioning of a portion of the cycling mechanism;

Figs. 7, 8 and 9 are perspective views of important elements in the tonearm indexing mechanism:

Fig. l0 is a detailed perspective-view of an element of the recordchanger;

Fig. 11 is a perspective view of a part of the velectrical tripmechanism for actuating the clutch mechanism of the record changer Figs.l2 and 13are perspective views of details of the tone arm support andtrip mechanism mounting; o. Y

Fig. 14 isa perspective viewof details of the electrical trip mechanism:and

Figs. l5 and'l are detail perspcctive'views of a' portion of thelelectroinagnetieally operated clutch of the record changer. I

With particular reference to the accompanying drawings, there is shownan automatic phonograph built on-a base plate i. Al depending U- shapedbracket 2 is secured to the base plate l and to this bracket there issecured a. fixed non rotatable vertical spindle 3. Loosely mounted onspindle 3 so as to freely rotate. thereon is a ranged toengage the innersurface of the turntable ilange to drive the same. The shaft E may bejournaled at one end in a movable plate t. y

which is urged by springs i and 8 so as to malntain the rubber drivingwheel in ilrm engagement with the turntable rim. Further description ofthe turntable and its-.driving means need not be givenhere as they maybe of any well known form or substantially as described in copendingapplication Serial No. 4122654, filed August 21, 1941, now Patent Number2,316,858,

granted April 20, 1943.

The turntable d may have a central flnib 9 l (Figs. l5 and-18) secured,theretopthe hub being 'lower face. It will be understood that whenthephonograph is playing, a series of records. the turntable d willberotating continuously, and hence the rotating hub 9 will form acontinuously available source of power for operating the recordchangtweenthe record changer and the tone arm Aindexing means;

Fig. 6 is a perspective view of certain elements.

ing mechanism as will now be described. y

Below the -hub 8 on spindle 3 there is a gear il having teeth i2 facingteeth I0 but normally disengaged therefrom (Figs. 6 and 15). Gear alsohas teeth I3 which engage the idler gear I4 to drive a, larger main camgear I5, as illustrated. The structure of cam gear |5 is a principalfeature of this invention and will be described more particularlyhereinafter. In order to cause engagement' of the clutch gears Ill-I2,an electromagnet I5, energized by a trip mechanism at the completion ofthe playing of a record. is provided. Energization of the magnet I6causes a horizontally pivoted lever |'1 to rock about its pivot I8. Oneend of lever |1 supports the gear on spindle 3 so that the rocking oflever |1 will engage the clutch gears III- I2 to .cause immediaterotation of the main cam gear I5. The other end of lever |1 extendstoward the periphery of cam gear I and carries a small roller |9. Theroller I9 normally rests in a notch or recess (Fig. 7). in a dependingannular flange 2| on the underside of cam gear I5. Thus, when magnet I8is deenergized,

the roller I9 locks the cam gear I5 against rotation; but when themagnet I6 is momentarily energized by the trip mechanism, lever I1 rocksto free the cam gear and to engage the clutch to rotate the cam gear.After its initial movement, the flange 2| serves to maintain the clutchin engagement through one complete revolution of the cam gear I5.

The single revolution of cam gear I5 is utilizedto control all of theelements of the record changing Ymechanism during the record changingcycle. One such function of the cam gear I5 is to control the movementof the tone arm which carries the reproducer. At one side of theturntable/there is secured to the base plate I a pivotally mounted tonearm 22 which may carry any type of reproducer at its inner end. The tonearm mount is best shown in Figs. 1, 4, 11, 12, and 13. A hollow bearing23 fastened on base plate I forms the base for the tone arm. Throughthis bearing a hollow shaft 24 (Fig. 13) having a yoke 25 at its upperend is journaled. This provides for the horizontal movement of the tonearm. To yoke 25 a second yoke 28 is pivoted, the yoke 23 supporting thetone arm which is afxed to the tongue 21, to permit vertical movement ofthe tone arm. The tone arm may be secured to tongue 21 in any suitablemanner, for example, by screws or rivets passing through the openings inthe tongue shown in Fig. 13. A bushing 28 (Fig. 12) is secured to thelower end of shaft 24. This bushing carries a long multi-part arm 29(Fig. 11)

which serves both as a part of the trip mechanism and as a part of thetone arm indexing mechanism. To mount the arm on the bushing 28 a lostmotion connection is provided to insure against accidental damage to theparts -of the arm resulting, from accidental forced movement of the tonearm. This connection consists of a mounting plate 30 loosely pivoted onbushing 28. Beneath plate 30 there is a yoke member3| (Fig. 12) having aD-shaped head 32 and an extending finger 33. member 3| are securedtogether on the bushing 28 by collar 34 but are arranged for relativelongitudinal movement. Normally spring 35, connected between plate 30and linger 33, urges member 3| toward bushing 28A so that the flat face38 of yoke head 32 will squarely seat on the fiat face 36aon the bushing28. The engagement of the faces 38 and` 38a normally fixes the relativepositions of plate 30 and member 3| with respect to the-bushing 28andthe tone arm 22. However, should'the tone arm be forci- Plate 30 andbly moved while the arm 29 is held tlxed, rotation of bushing 28 willmerely cause the extension of spring 35, and when the force is removedfrom the tone arm the spring 35 will reseat edge 36 on edge 36a in theirnormal relation.

Referring again to Fig. l1 the plate 38 carries an outwardly extendingnger 31 which carries at its free -end a horizontally pivoted pawl 38.This pawl serves as one contact of an electrical-switch and it istherefore electrically insulated from the body of the arm 29 by asuitable insulating block. The pawl 38 normally rests in .a horizontalplane and to maintain it in this position the free end ofthe pawl, whichcarries the electrical contact button 39, is weighted at 4|! and isurged counterclockwise (as seen in Fig. 11) by a fine coiled spring 4|which surrounds the pivot for the pa'vl. To rotate the pawl 38 clockwise(as seen in Fig. 11) a-small friction roller 42 is secured to the pawlon its axis of rotation. The function of this roller and the pawl 28 canbest be understood 3 during the playing of a record the arm 29 is alsorotated in a parallel horizontal plane beneath the base plate I. Thedirection of movement is indicated by the arrow in Fig. 6. As the tonearm approaches the end of a record the pawl 38 will approach a pulsingplate 43 which is carried by a resilient arm attached to 1 the underside of the base plate Plate 43 has a. normal 'position from which it ismomentarily deflected at regular intervals of time bythe pivoted. lever44. Lever 44 engages the plate 43 with one endwhilethe other end of thelever carries a roller 45 adapted to ride on a shoulder 48 of thecontinuously rotating turntable hub 9. The shoulder 48 has a raised camportion 41 at one point so that once each revolution of the turntablelever 44 will be rocked to ilex the plate 43 from its normal position toa raised position. The relative positions of plate 43 and pawl 38 aresuch that the pawl will pass underneath the plate without contacting thesame, but roller 42 is of such diameter that its upper portionfrictionally engages the under surface of plate 43 when the same isinits lower position. Therefore as arm 29 is moved horizontallyby themovement of the tone arm 22, roller 42 will be caused to rotateclockwise (as seenin Fig. 6) thereby elevating the electrical 'contactbutton 40 toward plate 43. The several elements just described comprisethe electrical trip mechanism for energizing the electromagnet I8 at theend of the playing of a record. Suitable wires 48.l 49 and 50 connect asource of power (not shown), the magnet I6, plate 43 and pawl 38 inseries so that whenever rthe pawl 38 is elevated sufficiently forcontact 40 to engage plate 43 the magnet I5 will be energized to closethe clutch I0, I2 as described above. However, the several elements ofthe trip mechanism, and particularly pawl 28 and roller 42, are soproportioned that with the tone arm moving inwardly very slowly duringthe playing of a record the time interval between the pulses of plate 43is insuflicientto enable contact between button 40 and plate 43.Further, cam 41 and lever 44 are so designed that when plate 43 isflexed on each revolution of the turntable it becomes momentarilydisengaged spiral terminating groove at the inner edge of the` .ventionbut is described and claimed record the .pawl 38 is thenl'move'dinwardly so rapidly that during the time interval between the pulses ofplate 43 the pawl will be rotated about its pivot causing contact buttonI to engage plate 43 to close the circuit energizing magnet I6, thusinitiating the record changing cycle. The speciiic pulsing mechanism andelectrical switch structure does not form a part of the present in in U.S. Patent No. 2,287,726, issued to R. S. Cranmer on June 23,- 1942.

While a-speciilc form of trip mechanism for energizing solenoid I 5 hasbeen illustrated and described, it will be understood that other formsmay be used.` For example, the trip mechanism shown in' a copendingapplication of R. S. Cranmer, Serial No. 393,636, iiled May 15, 1941,now

The extension 56 normally seats the head .of an adjustable screw 5'I onyoke 26 so that theelevating or lowering of rod 55 will in turn raise orlower the tone arm head by causing clockwise or counterclockwiserotation of the tone arm as viewed in Fig. 1.

The tone armk having been raised of! the record, zone B of cam gear I5will now-pass under stud 54. This zone is bounded at the outer and inneredges by upstanding flanges which form a surface of narrowing widthsuchv that at the end of zone'B the surface is merely PatentNumber-2,287,727, issued June 23, 1942,

may be employed. Y

Thus far there has been described themechanism to initiate and controlthe rotation of the 1 main cam gear I5 through one revolution when thereproducer reaches the terminating groove of a record. In order toplacea new record on the turntable it is necessary that the tone arm be.elevated clear of the record, then swung' laterally to a position toone side of the turntable, then swung inwardly to a position over theedge of the newrecording, then lowered onto the record, and thenpermitted to move freely over the record during the playing thereof.These ve movements are all controlled by the various surfaces or zoneson the main cam gear I5 labeled A to E respectively in Fig. 5. Referringagain to Fig.

II the plate 39 will be seen to have a portion 5I bent so'as to carry asecond finger 52 below plate Sli in a plane generally parallel thereto.

Finger 52 is resiliently attached to 'portion'. 5I

through a flexible strip 52a so that it can be exed about a transverseaxis. An upturned iinger 53 serves to maintain plate 3@ and nger 52 insubstantial alignment. At itsfree extremity finger 52 carries adownwardly extending studl a narrow annular channel 58 of large radiusat the outer edge of the cam gear. When the stud 55 is in channel 58,linger 52 vand the tone arm22 will have been rotated to a position atone side ofthe record and' turntable so as not to interfere with thefeeding of another record to the turntable. Since thezone B of the camgear is a plane elevated surface, the tone arxn is maintained in itselevated position.

' Stud Ednow engages the `zone C of cam wheelv channel Si) in switch 59forms a continuation l of channel 58. This is shown in Fig. 5. The

switch member 59 is movable about its pivot between two positions and isnormally maintained 54 which always overlies the upper face of the maincam gear I5 (see Figs. 1, 2, and 4) and contacts the same (Fig. 4). InFig. 2 the cam gear I5 is shown in its normal stationary position withstud 55 in zone E (see Fig. 5). Zone E is a fiat portion of the cam facesuchthat movement of stud 55' throughout zone E will not beat allrestrained. Asthe tone arm moves inwardly over a record, the stud 54will move on a generally radial line toward the center of the cam gearI5. When the tone arm causes the energization of the magnet I 3, the camwheel I5 begins to rotate and zone A of' the cam passes below stud 55.Zone A comprises an inclined plane the entire surface of which is sodeveloped that as it passes beneath stud 5 6 a lifting force is alwaysexerted on stud 54 on a line passing through the axis of stud 54 and thetone arm pivot 23. This is desirable as it prevents lateral movement ofstud 55 across the zone A as the cam I5 rotates, such motion being veryundesirable. Zlone A of the c am gear I5 thus elevates stud 5B andcauses the nger 52 to iiex to elevate the tone arm as will now bedescribed. Y

Referring to Figs.- 4, 11 and 13, the hollow shaft 25 supports within.itself a small rod 55 which extends below shaft 24'and has-at itsupperend an oii'set extension 56 as shown. When arm 29 is assembled onshaft 24, the nnger 52 will underlie the lower end of rod 55- (see Fig.4) and the exing ofnger 52 about its base by the cam gear I5 willelevate rod 55.

in the outer of these positions by a .leaf spring 5I winch urges a studt3 on switch 59 ainst a stop 6d on cam gear l5. Switch member 59includes an extending portion 52 arranged to be acted upon by suitablelinkages to be described later which are effective to move switch 59 toits inner position when desired. The channel 59 is curved so that whenthe switch 5 9 yis in its outer position the stud 5d and arm 22 will bemoved to position the tone arm over theedge of a record of vlargediameter when the cam gear I5 has rotated s o that stud 54 is adjacentvthe trailing edge of channel section 60.

As noted, switch 5 9 is pivotally mounted for.

movement to an inner position. This position is determined by theabutment of the stud 63 against a stop on cam gear I5 (Figs. 8 and 9)which are located so that when switch section 59 is in its innerposition it will cause the zone D of the cam gear which is tone armto berotated to a position above the edge of a vsmaller diameter record.Switch member-59 is thus adjustable to index the tone arm for theplaying of records of diilerent diameter and the only remaining functionfor cam gear I5 is that of lowering the tone arm o nto a record. Thisfunction is performed by seen to comprise two annular inclined channelsAor tracks 66, 61 the leading edges of which connect with the trailingedge of switch member 59 in its outer and inner positions`respectively.v Channels 6E and 51 are circular and therefore there willbe no lateral motion of theftone arm, Vbut these channels lower stud 54-to the elevation of the zone E thus loweringthe linger 52, rod 55 andtone arm 22 until the latter engages the record. Cam gear I5 havingcompleted one revolution will now be in the position illustrated inFigs; f

1, 4, and 6 andwill remain stationary until the "magnet I 6 is againenergized at the completion of the playing of a record asdescribed.

Mechanism is also provided to supply records to the turntable one at atime from a record wherein the cam surfaces through a hence the tonemagazine containing a. stack of records. In Fig. 1, one record is shownon the turntable while another record 68 is shown supported above theturntable in a position t`o be dropped'thereon. Records are supported attheir center by the spindle 3 which has a flat shoulder 69 formed toengage the record at its center opening. The outer edge of the record issupported at two spaced points byone of two record shelves 18. 1|,(Figs. 1, 2, 5, and 10). Each shelf at its lateral extremities carriesstuds` 12 shaped to engage the underside and the edge of a recordA as inFig. 1. The shelves 18, 1| are pivotally supported at 13 on theupstanding arm 14 of a bell crank comprising arms 14 and 15. The bellcrank is pivotally'supported from the base plate will be indexed forrecords of small diameter. When the record shelf 1| is rotated to itsinoperative position the tension on cord 84 will be released and spring82 will rotate member 80 to its extreme clockwise position in which1inger 8| will not contact switch member 59 during the rotation of camgear l5, so that the tone arm will be indexed for records of largediameter. If desired, some other means for controlling the position ofmember 89 may be provided without modifying the main cam gear I6.

To prevent the accidental discharge of records from the record shelf asthe result of vibration of the record changer, a pivotal arm 86 I atpivot 16. If desired some adjustment as at 11 may be used to varythe,angular relation of the Itone arm is off-to one side of the recordand hence a record freed from shoulder 69 may drop onto the turntable.Except for the use of the dual shelves 18 and 1|, thel speciilc type ofArecord feeding mechanism above described is well known and no furtherdescription thereofis believed necessary.

The shelves 19 and 1| are of different lengths such that the shelf 1|when in operative position extends toward the spindle 3 more than doesshelf 19. Both shelves are rotatable about their pivot from operativeposition to the position' shown in dotted lines in Fig. 1.

Shelf 1| thus supports small diameter records while shelf 10, when shelf1| is rotated to inoperative position, will support large diameterrecords.

To adjusting the record changer to play twelve or ten inch records it isnecessary to move the desired record shelf 18, 1| into operativeposition and in accordance with this invention the adjustment of therecord shelves is used to control the position of the switch member 58to properly index the tone arm for the propel` record diameter. Thisinterlock is best'illustrated in Figs. 2 and 5. A pivoted control member88 is-mounted beneath the base plate-I adjacent the edge of the main camgear I6 and carries a, finger 8|- extending toward said gear (Fig. 5).This member 88 is adjustable between two positions determined bysuitable stops not shown. The spring 89a normally maintains member 88 inits extreme clockwise position as viewed in Fig. 5. A second linger 82on member 89 is attached to one end of a tension spring 83, the otherend of which is secured to a cord 84. .The cord 84 is guidedby pulleys85 to the base of arm 14 and then it passes over the pivot of recordshelf 1| and terminates at the base of shelf 1| to which 'it `is secured(see Fig. 10). When shelf 1| is placed in operative position, as shownin Fig. 5, cord 84 will rotate memberv 80 to its counterclockwiseposition where finger 8| will terminate adjacent the periphery or maincam wheel I5; As the cam wheel I6 rotates', switch membery 68 will bemoved to its inner position by engagement with the tlnger 8|. Thus whenthe record shelf 1| is in operative position the .tone-arm (see Figs. 1and 2). Ihaving a roller 81 on its free end maybe provided. Roller 81normally will rest on the upper surface oi the top record in thechanger. To permit easy removal of records from the turntable, recordshelves 18, 1| and arm 86 may be swung on their pivots to a rearwardlyextending position behind arm 14.

It is well known that some means should be 'l provided for moving thetone arm toward the first groove of a record after the stylus has beenplaced on the edge thereof. The arrangement shownin Figs. 2, 3, and 11performs this function. A projection 92 on plate 89 isY connected to aprojection 88 on member 88 by. a link 84 and spring 85. Theseelementsare proportioned to be under slighttension when the tone arminitiallycontacts the outer `edge of the record, so that slight rotationwill be given to the tone arm until the first groove of the record isengaged by the stylus. Itis a feature or' this structure that whenmember 88 is rotated to index the tone arm for records of eitherdiameter the projections 92, 93 will remain a fixed distance apart. This'assures a fixed force on spring 95 regardless of the size of the recordbeing played, so that the tone arm is always properly directed into therst record groove.

In the foregoing description the mechanism necessary for the automaticoperation of the recentNo. 2,287,726, and is herein. shown in `Figs.v

2, 3 and 14. A cam element 88 forms part of such mechanism and has anend portion 89 at adiiierent level than the main portion (Fig. 14). Apivoted lever extends between cam element 88 and arm 44 in such relationthat when portion 89 engages and depresses one end of lever 90 the otherend will elevate arm 44 to lift the pulsing plate 48 out 'of engagementwith the roller 42 of the trip mechanism, thus rendering the latterinoperative and permitting manual operation oi the record changer.

In. addition. a switch el eonnected in shunt` with the pulsing plate 48and tripping pawl 88 may be provided4 to. energize magnet I6 andinitiate a record changing cycle at any time.

From the above description of one form of apparatus constructedaccording to the invention it will be clear that an accurate,inexpensive. simple and dependable phonograph record changing mechanismhas been provided.V Numerous details of the structure may, of course, bemodied without departing from-the invention as dened in the appendedclaims.

We claim: 1. In an automaticv phonograph, a turntable,

means for driving said turntable, a tone arm mounted for movement withrespect to said turntable to reproduce sound records placed thereon,means for supporting a stack of records above said turntable andoperable to feed the records successively onto the turntable, a normallyst ationary rotatable cam plate having cam surfaces records at theirouter edges and manuallyniovable selectively to an operative position tosupport" different sized records, a mechanism Afor moving the tone armoff one record and onto a succeeding record, adjustable means on saidthereon 'and having a notch therein, means opfor actuating said lever towithdraw. said locking means from said notch and to engage said clutch,

to thereby effect rotation of said cam plate.

2. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said turntable to reproduce sound recordsplaced thereon, means-for supporting a stack of records above saidturntable and operable to 4i'eed the records successively onto theturntable, said means including a pair of shelf members on a commonhorizontal pivot arranged to support the records at their outer edgesand manually movable selectively to an operative position to` supportdifferent/sized records, means for moving the tone arm oi one record andonto a succeeding record, said last-named means being adjustable toadapt` the same for movement of the'tone arm according to the diiferentsized records, and means operable in response to the selective movementof one of said shelf members toits operative position foi` adjustingsaid tone arm-moving ymeans in correspondence to the selected shelf`member.

= 3. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said yturntable to reproduce sound recordsplaced thereon, means for supporting a stack of records abovesaidturntable and operable to feed the records successively onto theturntable, said means including a pair of shelf members on a commonhorizontal pivot arranged to support the f records at their outer edgesand manually movable selectively to an operative position to supportdifferent sized records, a mechanism for moving -the tone arm ofi' onerecord and onto'a succeeding record, adjustable means on said mechanismto adapt the same for movement of the tone arm according to the diierentsized records, means biasing said adjustable means to one position ofadjustment, and means operable in response to the selective movement ofone of said shelf members to its operative position for actuating saidadjustable means to a different position of adjustment, thereby toadjust said mechanism in correspondence to the selected shelf member.

4. In an automatic phonograph, a turntable, atone arm 'mounted formovement with respect to said turntable to reproduce sound recordsplaced thereon, means for supporting a stack of records above saidturntable and operable to feed the records successively onto theturntable, said means including a pair of shelf members on a mechanismto adapt the same for movement of the tone arm according to thedifferent sized records, means biasing said adjustable means to oneposition of adjustment, and means interconnecting one of said shelfmembers and said adjustable means and adapted toactuate the latter to a.different position of adjustment whenever said one shelf member is movedto its operative position,

whereby said mechanism is adjusted in correspondence to the shelfmember-employed in any instance.

5. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect lto said turntable to reproduce sound recordsplaced thereon, means for supporting a stack of records above saidturntable. and operable to feed the records successively ontotheturntable, said means including a plurality of support members on acommon horizontal pivot arranged to support the records lat their outeredges and manually movable selectively to an operative position tosupport different sized records, actuating means for said last-namedmeans to feed the records, actuating means for said tone arm to move thesame during the changing of records, a common cam for operating both ofsaid actuating means, adjustable means on said cam to adapt the samevfor movement of the tone arm according to the diierent sized records,and means operable in response to the selective `movement oi? one ofsaid record-support members to its operative position for actuating saidadjustable means in correspondence to the selected member.

6. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said turntable to reproduce sound recordsplaced thereon, means for supporting a stack of records above saidturntable and operable to feed records successively onto the turntable,said means including a plurality of support members on a commonhorizontal pivot selectively movable-to an operative position to supportdifferent sized records, means including a cam member for moving saidtone arim off one record andI onto a succeeding record, said cam memberhaving a plurality of tracks for governing the movement of the tone armaccording to the size of the records being used, a track-switchelementon said cam member movable to different positions to select oneof said tracks, and means operable in response to manual adjustment ofsaid record-supporting means for actuating -said track-switch element toselect the proper cam track for the record size corresponding to vsaidmanual adjustment.

'7. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said turntable to reproduce sound recordsplaced thereon, means for supporting a stack of records above saidturntable and operable to feed records successively onto the turntable,said means including a plurality of support members on a commonhorizontal pivot selectively movable to an operative position to supportdifferent sized records, means including a cam member for moving. saidtone arm ofi one record and onto a succeedingrecord, said cam memberhaving a plurality of tracks fors governing the movement of the tone armaccording to the size of the reccommon horizontal pivot arranged tosupport the A ords being used, atrack-switch element on saidrecord-supporting means for records of one size for actuating saidtrack-switch element to another of its positions, thereby to select theproper cam track for the said records.`

8. In an automatic phonograph, a turntable, a tone. arm mounted formovement with respect to said turntable to reproduce sound recordsplaced thereon, means for supporting a stack of records above saidturntable and operable to. feed records successively onto the turntable,said means including a plurality of support members on a commonhorizontal pivot selectively movable to an operative ,position tosupport different sized records, means including a cam member for movingsaid tone arm ofi' one record and onto a succeeding record, said cammember having a plurality of tracks for governing the movement of thetone arm according toi thesize oi' the records being used, atrack-switch element on said cam member movable. to diierent positionsto select one of said tracks, means biasing said track-switch element toone of its positions, an actuator for said track-switch element arrangedcooperatively with said cam member and movable between effective andineffective positions, said actuator when in its effective positionserving to move said track-switch element to another of its positions,and means responsive to selective movement of one of said supportmembers to its operative position for moving said actuator to itseffective position, so as to select the proper cam track for the recordsize corresponding to the selected support member.

said means including a pair of shelf members on a common horizontalpivot arranged to support the records at their outer edges and manuallymovable selectively to operative position to support different sizedrecords,v means including a cam member for moving said tone arm oi one,record and onto a succeeding record, said cam member having inner andouter tracks for governing the movement of the tone arm according to thesize of the records being used, a trackswitch element on said'cam membermovable to inner and cuter positions to select one of said tracks, meansbiasing said track-switch element to its outer position, and meansresponsive to the selection of the shelf member for smaller sizedrecords for moving said track-switch element to -its inner position,thereby to select the inner 9. In an automatic phonograph,A a turntable,a o

tone arm mounted for movement with respect to saidl turntable toreproduce sound records placed thereon, means for supporting a stack ofrecords above said turntable and operable to feed records successivelyonto the turntable, said means including a plurality of support memberson a common horizontal pivot selectively movable to an operativeposition to. support different sized records, means including a cammember for moving said tone arm on.' one recl ord and onto a succeedingrecord, said cam member having inner and outer tracks for governing `themovement of the tone arm according to the size of the records beingused, Va trackswitch element on said cam member movable to inner andouter positions-tol select one of said tracks, means biasing saidtrack-switch element to its outer position, an actuator for saidtrackswitch element arranged cooperativelyl with said cam member andmovable between effective and ineffective positions. said actuator whenin its effective position serving to move said track-switch elementtoits inner position, means biasing saidv actuator to its ineifectiveposition, and means responsive to the operative positioning of thesupport member for smaller sized records for moving said actuator to itseffective position. thereby to select the inner cani track for the saidrecords.

10. In an automatic phonograph, a tone arm mounted for movement withrespect A to said turntable to reproduce sound records placed thereon,means for supporting a stack of records above said turntable andoperable t0 a turntable. 7

cam track for the said records.

ll. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said turntable to reproduce, sound records.placed thereon, means for supporting a stack of records above saidturntable and operable to feed the records successively onto theturntable, said means including a pair of shelf members on a commonhorizontal pivot arranged to support the records at their outer edgesand manually movable selectively. to operative position to supportdiierent sized records, means including a cam member for moving saidtone arm oil one record and onto a succeeding record, said cam memberhaving inner and outer tracks for governing the movement of the tone armaccording to the size of the records being used, a trackswitch elementon said cam member movable to inner and outer positions to select one ofsaid tracks, means biasing said track-switch element to its outerposition, an actuator for said trackswitch element arrangedcooperatively with said cam member and movable between effective andineffective positions, said actuator when in its effective positionserving to move said track-switch element to its inner position, meansbiasing said actuator to its ineffective position, and means responsiveto the selection of the shelf member for smaller sized records formoving said actuator to its effective position, thereby to select theinner cam track for the said records.

l2. In an automatic phonograph, a turntable, a tone arm mounted formovement with respect to said turntable .to reproduce sound recordsplaced thereon, means for supporting a 'stack of records above saidturntable and operable to feed the records successively onto theturntable, said means including a plurality of support members on acommon horizontal pivot arranged to suport" the records at their outeredges and manually movable selectively'to an operative position tosupport different sized records, actuating means for said last-namedmeans to feed the records.

actuating means for said tone arm to move the same during the changingof records, a common cam for operating both of said 'actuating means,said'cam having a plurality of tracks for governing the movement of thetone arm accord-` ing to the size of the records being used,a'trackswitch element on said cam movable to diierent positions toselect one of said tracks, and means feed the records successively ontothe turntable operable in response to selective movement of said supportmembers for actuating said trackswitch element to select the proper camtrack for the record size corresponding to the selected -support member.

said meansincludlns a plurality o! support members on a commonhorizontal pivot arranged to 'support the records attheir outer 189sandv manually movable selectively to an operative position to supportdlerent slled records. a can:v

plate havingcam surfaces on itsy opposite faces.

means operable by the cam surface on one face l of said plate foractuatingA said record-supporting means to feed records, means operablehy the cam surface on the other face o! said plate forkxxxot'i'n'gailiti during the changing I orrecord's. said other lace'having a plurality or tracks'for eoverninzthemovemet o! the tone'arm-aocordlngtothesineottherecordshelng. tuned.atrack-switchelementensaidcompiutei movable todlilereut positions`to select `one of said v tracks. aud means operable ln response tctsevlectlve movement of sald support members for actuating` said'track-switch element to select the l0 proper cam track for the recordsize correspondlng to the selected support member.

. mcrnmpgs.

A. Jr.

